Ai Hidaka

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Ai Hidaka
THE iDOLM@STER Second Vision Data
Name: 日高愛 (Hidaka Ai)
Voice actor: 戸松遥 (Tomatsu Haruka)
Age: 13
Height: 149 cm
Weight: 40 kg
Birthday: June 25th
Blood type: O
Three sizes: 78-55-79 cm
Handedness: Right
Hobbies: Deals/Bargains,
Goldfish Scooping
Horoscope: Cancer
Hometown: Kanagawa
Image Color:     
Birthday Banners

Ai Hidaka (日高愛 Hidaka Ai) is an idol from 876 Production, who first appeared in the Nintendo DS game THE iDOLM@STER Dearly Stars.

She is voiced by Haruka Tomatsu (戸松遥 Tomatsu Haruka).


THE iDOLM@STER Dearly Stars Statistics

Vocal High
Dance Low
Visual Medium

Character Description

Ai is the daughter of a former superstar idol in Japan, Mai Hidaka. She is very peppy and motivated by the fame of her mother, although she cries at defeat. She is a hot blooded girl, known for having a lot of energy and her determination. Ai is prone to shouting most of her speech, especially when excited. She is also good at all kinds of television shows.

Game Appearances

THE iDOLM@STER Dearly Stars

Ai, wishing to become an idol as famous as her mother once was, has been participating in tests at various talent agencies, but she has failed every single one of them. Her inability to even begin to follow into her mother's footsteps becomes a complex to her. As Ai bursts into tears, alone in a public park, she is approached by 765 Production idol Haruka Amami, who was a special judge at one of the tests Ai has taken. Having sensed something special about Ai's singing, Haruka comforts her and introduces her to 876 Production's president Ishikawa. The president is very quick to invite Ai into 876, as she believes that her mother's name alone should be enough to propel Ai to the top. Ai protests against it, stating that she wants to become an idol using only her own strength. She is then given one chance to prove herself, at a rookie idol audition.

Along with fellow idol Ryo Akizuki, Manami Okamoto was assigned as Ai's manager, with Eri Mizutani already having Reiko Ozaki as her producer. However, Manami was later dismissed, leaving Ai to manage herself alone.

Ai continues to rise up in ranks to become a top idol, however she will have to be independent and have to fight off the shadows of her past, including Manami, Haruka and her own mother Mai Hidaka.

THE iDOLM@STER 2 (PlayStation 3)

Ai makes her HD debut in THE iDOLM@STER 2 on the PlayStation 3. She is downloadable from the 3rd DLC Catalog as an in-story rival and Stage For You! performer and sings "ALIVE" and "GO MY WAY!!". Her appearance has not changed in design since this update.

THE iDOLM@STER Gravure For You!

Ai also appeared in Volume 7 of THE iDOLM@STER Gravure For You! as a guest idol, wearing the "Exercise Wear NEO" costume, making her the only guest character in Gravure For You! to not wear a swimsuit.

She sings the BGM music "ALIVE", "GO MY WAY!!", and "HELLO!!" in this mode. She uses the same model as her iDOLM@STER 2 appearance and has an introduction video featured in volume 7.


Ai is one of the rival characters in the STAR OF FESTA mode for Honey Sound, Groovy Tune, and Funky Note. She is an A rank rival who can be challenged in the HARD difficulty. When defeated, she will give her Name Card to the player, and obtaining it adds 40 points to the player's score after their performance.

Ai Hidaka (middle) with Eri Mizutani (left) and Ryo Akizuki (right) in the unit Dearly Stars.

THE iDOLM@STER Million Live!

Ai, alongside Eri and Ryo, makes a cameo appearance in one of Mirai Kasuga's SR cards, titled Hot-Blooded Rebounder.


Ai makes a guest appearance in the tenth mini DLC album titled Azusa friends "Blessing", in which she performs her song "ALIVE".


Initially, Ai is the Rank Up Festival boss for the D3 rank, where she displays her skill, とつげき豆タンク! (Tankette Assault!), which causes the player's Normal and Memory appeal to be worth 10 point max while she bursts. She is only available to be seen while she burst appeals, which displays her performing the song "ALIVE" in her 876PRO CUTE AI costume. Unfortunately, she is unable to be outside of the short time from the burst appeal.

However, she later debuted in the unit Dearly Stars alongside her fellow 876 Production idols: Eri Mizutani and Ryo Akizuki. Reprising a performance similar to her iDOLM@STER 2 appearance, her unit displays the song "HELLO!!".


Ai Hidaka and Eri Mizutani make a cameo appearance in one of Ryo Akizuki's SR+ cards, titled Candid Shot+.

THE iDOLM@STER Starlit Season

Ai Hidaka cameos as part of the unit Dearly Stars, along with Eri Mizutani and Ryo Akizuki, as a possible rival the player can face.

Other Media Appearances

THE iDOLM@STER (anime)

Ai Hidaka makes a guest appearance in episode 10 of the anime along with Ryo Akizuki and Eri Mizutani as a trio of good friends from 876 Production. They are not the main focus of the story, but they do have a few lines of dialogue with the other two.


Although Ai, Eri, and Ryo do not appear directly in the movie, their idol activities can be seen on posters and advertisements in the movie.


Ai makes a cameo in the manga when Yukiho, Makoto, and Azusa visit a spring shrine.


Ai makes a cameo appearance in Volume 2, as a spectator during a television show Haruka and Yukiho appear in.

THE iDOLM@STER Splash Red for Dearly Stars

Ai is the main protagonist of this manga. It is a retelling of her route from Dearly Stars.

THE iDOLM@STER Innocent Blue for Dearly Stars

THE iDOLM@STER Neue Green for Dearly Stars


Song Discography

Image Songs


Personal Songs


Recorded Solo Songs

Recorded Group Songs

Drama CD Appearances

THE iDOLM@STER Splash Red Volume 3 Special Edition Bonus Drama CD


  • Ai's hometown was not listed in her original profile data, while her Cinderella Girls data listed it as "876 Production". Her official hometown was finally revealed in 2020 with the release of the official idol list.
  • Ai's character voice actress Haruka Tomatsu and Eri's voice actress Kana Hanazawa often work together.
  • She shares the same birthday with Sana Miyoshi.

Character Gallery


Weiβ Schwarz TCG Cards

THE iDOLM@STER Cinderella Girls Cards